SIFT + DeepOrientation + SOSNet + Blob Matching + DTM + RANSAC 0.75

This page ranks the submission against all others using the same number of keypoints, regardless of descriptor size. Please hover over table headers for descriptions on metrics and full scene names.

• Phototourism: Stereo track
• Phototourism: Multiview track

Metadata

• Authors: Fabio Bellavia (contact)
• Keypoint: sift
• Descriptor: deep-oriented-sosnet (128 float32: 512 bytes)
• Number of features: 8000
• Summary: SIFT (VLFeat implementation) [Lowe 2004] + Deep patch orientation [Yi et al. 2015] + SOSNet [Tian at al. 2019] (weights: sosnet-32x32-hpatches_a.pth) + Blob Matching [unpublished] + Delaunay Triangulation Matching (DTM) [unpublished] + PyRANSAC (threshold 0.75, degeneracy check true) [Mishkin 2019]
• Paper: N/A
• Website: N/A
• Origin: Submission
• Flags: is_submission, is_challenge_2020

Phototourism / Stereo track

{
    "use_custom_matches": true,
    "custom_matches_name": "sift-sosnet-blob-dtm-ransac-075-match",
    "geom": {
        "method": "cv2-8pt"
    }
}

We show the inliers that survive the robust estimation loop (i.e. RANSAC), or those supplied with the submission if using custom matches, and use the depth estimates to determine whether they are correct. We draw matches above a 5-pixel error threshold in red, and those below are color-coded by their error, from 0 (green) to 5 pixels (yellow). Matches for which we do not have depth estimates are drawn in blue. Please note that the depth maps are estimates and may contain errors.

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— british museum —

— florence cathedral side —

— lincoln memorial statue —

— london bridge —

— milan cathedral —

— mount rushmore —

— piazza san marco —

— sagrada familia —

— saint paul's cathedral —

Phototourism / Multiview track

{
    "use_custom_matches": true,
    "custom_matches_name": "sift-sosnet-blob-dtm-ransac-075-match",
    "colmap": {}
}

In the multi-view track we reconstruct the scene with Structure-from-Motion (Colmap) with small sets of images. We show the results for one bag of 25 images (displaying: 10). Keypoints are drawn in blue if they are part of the model, and in red otherwise.

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— british museum —

— florence cathedral side —

— lincoln memorial statue —

— london bridge —

— milan cathedral —

— mount rushmore —

— piazza san marco —

— sagrada familia —

— saint paul's cathedral —